18098381619 has 24 divisors (see below), whose sum is σ = 27524494400. Its totient is φ = 11427862320.

The previous prime is 18098381573. The next prime is 18098381621. The reversal of 18098381619 is 91618389081.

18098381619 is a `hidden beast` number, since 18 + 0 + 9 + 8 + 3 + 8 + 1 + 619 = 666.

It is not a de Polignac number, because 18098381619 - 2⁷ = 18098381491 is a prime.

It is a super-2 number, since 2×18098381619² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18098381689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 916884 + ... + 936414.

Almost surely, 2^18098381619 is an apocalyptic number.

18098381619 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

18098381619 is a deficient number, since it is larger than the sum of its proper divisors (9426112781).

18098381619 is a wasteful number, since it uses less digits than its factorization.

18098381619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24975 (or 24972 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 54.

The spelling of 18098381619 in words is "eighteen billion, ninety-eight million, three hundred eighty-one thousand, six hundred nineteen".